Includes: 4 Industrial barbells Piercing Type: Industrial Barbell Material: 316L Surgical steel Accent Material: Metal alloy Gauge: 14 Gauge/1.6mm Length: 32mm Ball Size: 5mm Threaded closure Jewelry Care: Clean with antibacterial soap and warm water Piercing Care: Clean with H2Ocean Aftercare Spray (sold separately) or saline solution Imported Note: Do not use any harsh, alcohol-based chemicals as this may cause tarnishing Do not over-thread or apply excess pressure when adding/removing beads as breakage could occur Surgical steel may contain trace amounts of nickel